JN
John Nichols — 1940 US Census Record
Model Tree available1940 United States Federal Census · Westchester-County, New York
Our Model Tree links this John Nichols across the 1920, 1930 and 1940 US Censuses in Westchester-County, New York (XGBoost, ~Confirmed), with identified parents Lillian & James — first a head (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Westchester-County, New York |
| Surname | Nichols |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | YONKERS |
| 1935 Residence (County) | WESTCHESTER |
| Additional Details | |
| Occupation | Contractor |
| Industry | Building Construction |
| Class of Worker | OA |
| Hours Worked | 36 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Contractor |
| Township / Ward | Yonkers |
| Est. Birth Year | ~1912 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Isabella Nichols | Daughter | — | ~1940 | |
| John Nichols | Head | — | 28 | ~1912 |
| Mary Nichols | Spouse | — | 20 | ~1920 |
Census Appearances
1920
Kings, New …
Son, age 8
Kings, New York · implied b. ~1912 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Italian |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Westchester, New …
Son, age 18
Westchester, New York · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholas |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Occupation | usher |
| Industry | theatre |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Westchester-County, New …
Head, age 28
Westchester-County, New York · implied b. ~1912 — 3 household members
| Surname | Nichols |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | YONKERS |
| 1935 Residence (County) | WESTCHESTER |
| Occupation | Contractor |
| Industry | Building Construction |
| Class of Worker | OA |
| Hours Worked | 36 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Nichols across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: mother Lillian Nicholas (~0.92 confidence) and father James Nicholas (~0.92 confidence) and father Fred Nicholas (~0.92 confidence) and mother Mary Nicholas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Lillian Nicholas
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
James Nicholas
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Fred Nicholas
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Mary Nicholas
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Nichols
Head · 1940 · age 28 · b. ~1912 · New York
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Westchester-County, New York
Open full size
1940 US Federal Census — Westchester-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02864-00679)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Minerva Brown | 68 | Head | Laundress | New York |
| 42 | Eunice Brown | 37 | Daughter | Laundress | New York |
| 43 | Mamie Whale | 52 | Head | — | North Carolina |
| 44 | Lloyd Whale | 11 | Son | — | New York |
| 45 | William Jones | 42 | Head | Chauffer | North Carolina |
| 46 | Lillian Jones | 35 | Wife | — | Virginia |
| 47 | William Jones | 19 | Son | New Worker | New York |
| 48 | Wendell Jones | 16 | Son | — | New York |
| 49 | Dorothy Jones | 14 | Daughter | — | New York |
| 50 | Lilian Jones | 11 | Daughter | — | New York |
| 51 | Mary Jones | 9 | Daughter | — | New York |
| 52 | Ruth Jones | 7 | Daughter | — | New York |
| 53 | Isiah Jones | 1 | Son | — | New York |
| 54 | John A Nichols THIS PERSON | 28 | Head | Contractor | New York |
| 55 | Mary Nichols | 20 | Wife | — | New York |
| 56 | Isabella Nichols | 0 | Daughter | — | New York |
| 57 | Carmin Nichols | 62 | Head | Contractor | Italy |
| 58 | Concetta Nichols | 57 | Wife | — | Italy |
| 59 | Anna Nichols | 24 | Daughter | — | New York |
| 60 | Dominick De Giovanni | 26 | Head | Salesman | Italy |
| 61 | Grace De Giovanni | 25 | Wife | — | New York |
| 62 | Mario De Nichols | 27 | Head | Labor | New York |
| 63 | Nancy De Nichols | 26 | Wife | Clerical | New York |
| 64 | Theresa Merlino | 59 | Head | — | Italy |
| 65 | Helen Merlino | 21 | Daughter | Seamstress | New York |
| 66 | Lewis Merlino | 17 | Son | New Worker | New York |
| 67 | Alwin Joch | 56 | Head | — | Germany |
| 68 | Alwin Jr Joch | 37 | Son | Clerical | New York |
| 69 | Thomas Curtiss | 38 | Head | Section Manager | New York |
| 70 | Evelyn Curtiss | 39 | Wife | — | Mass |
| 71 | Robert Curtiss | 10 | Son | — | New York |
| 72 | George King | 41 | Lodger | Clerical Work | New York |
| 73 | Michael Manzoli | 55 | Head | Labor | Italy |
| 74 | Josephine Manzoli | 45 | Wife | — | Italy |
| 75 | Peter Manzoli | 22 | Son | Grocery Clerk | Italy |
| 76 | Alice Manzoli | 20 | Daughter | Seamstress | Italy |
| 77 | Vito Manzoli | 11 | Son | — | New York |
| 78 | William Manzoli | 9 | Son | — | New York |
| 79 | Orazio Panosetti | 45 | Lodger | Labor | Italy |
| 80 | Arthur Riek | 53 | Head | Machinist | Germany |
Pedigree Summary
John
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)